Hello! I've had my betta for around a year now, he's always a very hungry guy and energetic. A week ago I noticed his fins were starting to get folded but I didn't think much of it (out of ignorance). Then, two days ago he was just at the bottom of the tank, didn't come up to eat, had no appetite. I searched up what this could mean and upon several youtube videos, I concluded that he has fin rot. I got him Mardel Maracyn Two. Today he is not swimming just floating and sometimes making an effort to swim (but for the most part laying down). He did come up for food yesterday and ate 3 pallets. I did a water change before adding the medicine, cleaned the tank to the best of my abilities, removed the carbon filters, + no ammonia spikes after water testing. Then I added a package of the Maracyn Two. BUT, this morning I notice my betta has a small little belly. Could it be that he is just bloated? Please help if you can!! I have a 5-gallon tank and he has three tank mates (all neon tetras) and some snails.